optimize code generation

src/main/java/com/alibaba/compileflow/engine/common/util/ClassLoaderUtils.java

@@ -145,7 +145,7 @@ private static URL[] getDistinctURLs(LinkedList<URL> urls) {
         Set<URL> urlSet = new HashSet<>(urls.size());
 
         for (Iterator i = urls.iterator(); i.hasNext(); ) {
-            URL url = (URL)i.next();
+            URL url = (URL) i.next();
 
             if (urlSet.contains(url)) {
                 i.remove();

src/main/java/com/alibaba/compileflow/engine/common/util/ClassUtils.java

@@ -25,7 +25,7 @@
 public class ClassUtils {
 
     public static <T> T newInstance(String className) throws Exception {
-        return (T)newInstance(ClassLoaderUtils.loadClass(className));
+        return (T) newInstance(ClassLoaderUtils.loadClass(className));
     }
 
     public static <T> T newInstance(String className, Class referrer) throws Exception {
@@ -39,7 +39,7 @@ public static <T> T newInstance(String className, ClassLoader classLoader) throw
     public static <T> T newInstance(Class clazz) throws Exception {
         Constructor constructor = clazz.getDeclaredConstructor();
         constructor.setAccessible(true);
-        return (T)constructor.newInstance();
+        return (T) constructor.newInstance();
     }
 
     public static boolean isAbstractOrInterface(Class<?> clazz) {

src/main/java/com/alibaba/compileflow/engine/common/util/IOUtils.java

@@ -19,7 +19,7 @@ public static byte[] toByteArray(final InputStream input, final long size) throw
             throw new IllegalArgumentException("Size cannot be greater than Integer max value: " + size);
         }
 
-        return toByteArray(input, (int)size);
+        return toByteArray(input, (int) size);
     }
 
     public static byte[] toByteArray(final InputStream input) throws IOException {
@@ -59,7 +59,7 @@ public static int copy(final InputStream input, final OutputStream output) throw
         if (count > Integer.MAX_VALUE) {
             return -1;
         }
-        return (int)count;
+        return (int) count;
     }
 
     public static long copy(final InputStream input, final OutputStream output, final int bufferSize)

src/main/java/com/alibaba/compileflow/engine/common/util/MethodUtils.java

@@ -24,7 +24,7 @@
 public class MethodUtils {
 
     public static <T> T invoke(Object obj, Method method, Object... args) throws Exception {
-        return (T)method.invoke(obj, args);
+        return (T) method.invoke(obj, args);
     }
 
 }

src/main/java/com/alibaba/compileflow/engine/common/util/PackageUtils.java

@@ -134,7 +134,7 @@ private static void scanClassInJar(Set<Class<?>> classes, String packageName, UR
 
         JarFile jar;
         try {
-            jar = ((JarURLConnection)url.openConnection()).getJarFile();
+            jar = ((JarURLConnection) url.openConnection()).getJarFile();
         } catch (IOException e) {
             logger.error("Failed to get jar file, url is " + url, e);
             return;

src/main/java/com/alibaba/compileflow/engine/common/util/ProcessUtils.java

@@ -16,9 +16,10 @@
  */
 package com.alibaba.compileflow.engine.common.util;
 
-import com.alibaba.compileflow.engine.definition.bpmn.Gateway;
-import com.alibaba.compileflow.engine.definition.common.*;
-import com.alibaba.compileflow.engine.definition.tbbpm.GatewayNode;
+import com.alibaba.compileflow.engine.definition.common.FlowModel;
+import com.alibaba.compileflow.engine.definition.common.GatewayElement;
+import com.alibaba.compileflow.engine.definition.common.Node;
+import com.alibaba.compileflow.engine.definition.common.Stateless;
 
 /**
  * @author yusu

src/main/java/com/alibaba/compileflow/engine/definition/bpmn/BpmnModel.java

@@ -42,7 +42,7 @@ public Process getProcess() {
     }
 
     public <T extends FlowElement> T getFlowElement(String id) {
-        return (T)processes.stream().map(process -> process.getElement(id))
+        return (T) processes.stream().map(process -> process.getElement(id))
             .filter(Objects::nonNull).findFirst()
             .orElseThrow(() -> new CompileFlowException("Undefined element, element id is " + id));
     }
@@ -51,7 +51,7 @@ public <T extends FlowElement> T getFlowElement(String id) {
     public List<TransitionNode> getTransitionNodes() {
         return processes.stream().map(Process::getFlowElements).flatMap(Collection::stream)
             .filter(flowElement -> flowElement instanceof TransitionNode)
-            .map(flowElement -> (TransitionNode)flowElement)
+            .map(flowElement -> (TransitionNode) flowElement)
             .collect(Collectors.toList());
     }
 

src/main/java/com/alibaba/compileflow/engine/definition/bpmn/Process.java

@@ -179,7 +179,7 @@ public FlowElement getElement(String id) {
     @Override
     public List<FlowNode> getAllNodes() {
         return flowElements.stream().filter(e -> e instanceof FlowNode)
-            .map(e -> (FlowNode)e).collect(Collectors.toList());
+            .map(e -> (FlowNode) e).collect(Collectors.toList());
     }
 
     @Override
@@ -189,7 +189,7 @@ public void addNode(FlowNode node) {
 
     @Override
     public FlowNode getNode(String id) {
-        return (FlowNode)getElement(id);
+        return (FlowNode) getElement(id);
     }
 
     @Override

src/main/java/com/alibaba/compileflow/engine/definition/bpmn/SubProcess.java

@@ -100,7 +100,7 @@ public FlowElement getElement(String id) {
     @Override
     public List<FlowNode> getAllNodes() {
         return flowElements.stream().filter(e -> e instanceof FlowNode)
-            .map(e -> (FlowNode)e).collect(Collectors.toList());
+            .map(e -> (FlowNode) e).collect(Collectors.toList());
     }
 
     @Override
@@ -110,7 +110,7 @@ public void addNode(FlowNode node) {
 
     @Override
     public FlowNode getNode(String id) {
-        return (FlowNode)getElement(id);
+        return (FlowNode) getElement(id);
     }
 
     @Override

src/main/java/com/alibaba/compileflow/engine/definition/tbbpm/InOutActionNode.java

@@ -16,7 +16,6 @@
  */
 package com.alibaba.compileflow.engine.definition.tbbpm;
 
-import com.alibaba.compileflow.engine.definition.common.action.HasAction;
 import com.alibaba.compileflow.engine.definition.common.action.HasInOutAction;
 import com.alibaba.compileflow.engine.definition.common.action.IAction;
 

src/main/java/com/alibaba/compileflow/engine/definition/tbbpm/WaitEventTaskNode.java

@@ -2,7 +2,6 @@
 
 import com.alibaba.compileflow.engine.definition.common.WaitElement;
 import com.alibaba.compileflow.engine.definition.common.action.HasInOutAction;
-import com.alibaba.compileflow.engine.definition.common.action.IAction;
 
 /**
  * @author wuxiang

src/main/java/com/alibaba/compileflow/engine/definition/tbbpm/WaitTaskNode.java

@@ -18,7 +18,6 @@
 
 import com.alibaba.compileflow.engine.definition.common.WaitElement;
 import com.alibaba.compileflow.engine.definition.common.action.HasInOutAction;
-import com.alibaba.compileflow.engine.definition.common.action.IAction;
 
 /**
  * @author wuxiang

src/main/java/com/alibaba/compileflow/engine/process/preruntime/compiler/impl/FlowClassLoader.java

@@ -39,7 +39,7 @@ public static FlowClassLoader getInstance() {
                 if (instance == null) {
                     try {
                         URL url = new URL("file:///" + CompileConstants.FLOW_COMPILE_CLASS_DIR);
-                        instance = new FlowClassLoader(new URL[] {url},
+                        instance = new FlowClassLoader(new URL[]{url},
                             FlowClassLoader.class.getClassLoader());
                     } catch (MalformedURLException e) {
                         throw new CompileFlowException(e);

src/main/java/com/alibaba/compileflow/engine/process/preruntime/compiler/impl/support/EcJavaCompiler.java

@@ -76,8 +76,8 @@ public void compile(JavaSource javaSource, File outputFile, CompileOption compil
 
         File javaSourceFile = javaSource.getJavaSourceFile();
         String targetClassName = javaSource.getTargetFullClassName();
-        String[] fileNames = new String[] {javaSourceFile.getAbsolutePath()};
-        String[] classNames = new String[] {targetClassName};
+        String[] fileNames = new String[]{javaSourceFile.getAbsolutePath()};
+        String[] classNames = new String[]{targetClassName};
 
         List<IProblem> problems = new ArrayList<>();
         INameEnvironment env = new INameEnvironment() {

src/main/java/com/alibaba/compileflow/engine/process/preruntime/converter/impl/parser/FlowParser.java

@@ -16,8 +16,8 @@
  */
 package com.alibaba.compileflow.engine.process.preruntime.converter.impl.parser;
 
-import com.alibaba.compileflow.engine.process.preruntime.converter.impl.parser.model.ParseConfig;
 import com.alibaba.compileflow.engine.process.preruntime.converter.impl.parser.model.FlowSource;
+import com.alibaba.compileflow.engine.process.preruntime.converter.impl.parser.model.ParseConfig;
 
 /**
  * @author wuxiang
@@ -29,4 +29,4 @@ public interface FlowParser<S extends FlowSource, R> extends Parser {
 
     R parse(S source, ParseConfig parseConfig);
 
-}
+}

src/main/java/com/alibaba/compileflow/engine/process/preruntime/converter/impl/parser/provider/support/AbstractParserProvider.java

@@ -35,7 +35,7 @@ public abstract class AbstractParserProvider<T extends Parser> implements Parser
     @Override
     @SuppressWarnings("unchecked")
     public T getParser(String name) {
-        return Optional.ofNullable((T)parserMap.get(name)).orElseThrow(
+        return Optional.ofNullable((T) parserMap.get(name)).orElseThrow(
             () -> new CompileFlowException("No parser found, name is " + name));
     }
 

src/main/java/com/alibaba/compileflow/engine/process/preruntime/converter/impl/parser/support/AbstractBpmnElementParser.java

@@ -46,22 +46,22 @@ public AbstractFlowElementParserProvider getParserProvider() {
     @SuppressWarnings("unchecked")
     protected boolean attachPlatformChildElement(Element childElement, E element, ParseContext parseContext) {
         if (element instanceof HasVar && childElement instanceof ExtensionElements) {
-            ((ExtensionElements)childElement).getExtensionElements().stream()
+            ((ExtensionElements) childElement).getExtensionElements().stream()
                 .filter(extensionElement -> "var".equals(extensionElement.getName()))
                 .map(this::buildExtensionVar)
-                .forEach(((HasVar)element)::addVar);
+                .forEach(((HasVar) element)::addVar);
             return false;
         }
         if (element instanceof ElementContainer && childElement instanceof FlowElement) {
-            ((ElementContainer)element).addElement(childElement);
+            ((ElementContainer) element).addElement(childElement);
             return true;
         }
         if (element instanceof HasAction && childElement instanceof IAction) {
-            ((HasAction)element).setAction((IAction)childElement);
+            ((HasAction) element).setAction((IAction) childElement);
             return true;
         }
         if (element instanceof Activity && childElement instanceof LoopCharacteristics) {
-            ((Activity)element).setLoopCharacteristics((LoopCharacteristics)childElement);
+            ((Activity) element).setLoopCharacteristics((LoopCharacteristics) childElement);
             return true;
         }
         return false;

src/main/java/com/alibaba/compileflow/engine/process/preruntime/converter/impl/parser/support/AbstractFlowElementParser.java

@@ -19,9 +19,9 @@
 import com.alibaba.compileflow.engine.definition.common.Element;
 import com.alibaba.compileflow.engine.process.preruntime.converter.impl.parser.FlowElementParser;
 import com.alibaba.compileflow.engine.process.preruntime.converter.impl.parser.model.ParseContext;
+import com.alibaba.compileflow.engine.process.preruntime.converter.impl.parser.model.XMLSource;
 import com.alibaba.compileflow.engine.process.preruntime.converter.impl.parser.provider.ParserProviderSupport;
 import com.alibaba.compileflow.engine.process.preruntime.converter.impl.parser.provider.support.AbstractFlowElementParserProvider;
-import com.alibaba.compileflow.engine.process.preruntime.converter.impl.parser.model.XMLSource;
 
 /**
  * @author wuxiang

src/main/java/com/alibaba/compileflow/engine/process/preruntime/converter/impl/parser/support/AbstractTbbpmElementParser.java

@@ -42,19 +42,19 @@ public AbstractFlowElementParserProvider getParserProvider() {
     @SuppressWarnings("unchecked")
     protected boolean attachPlatformChildElement(Element childElement, E element, ParseContext parseContext) {
         if (element instanceof FlowNode && childElement instanceof Transition) {
-            ((FlowNode)element).addOutgoingTransition((Transition)childElement);
+            ((FlowNode) element).addOutgoingTransition((Transition) childElement);
             return true;
         }
         if (element instanceof HasAction && childElement instanceof IAction) {
-            ((HasAction)element).setAction((IAction)childElement);
+            ((HasAction) element).setAction((IAction) childElement);
             return true;
         }
         if (element instanceof HasVar && childElement instanceof IVar) {
-            ((HasVar)element).addVar((IVar)childElement);
+            ((HasVar) element).addVar((IVar) childElement);
             return true;
         }
         if (element instanceof NodeContainer && childElement instanceof FlowNode) {
-            ((NodeContainer)element).addNode((FlowNode)childElement);
+            ((NodeContainer) element).addNode((FlowNode) childElement);
             return true;
         }
         return false;

src/main/java/com/alibaba/compileflow/engine/process/preruntime/converter/impl/parser/support/bpmn/BpmnStreamParser.java

@@ -49,7 +49,7 @@ protected AbstractFlowElementParserProvider getFlowElementParserProvider() {
     @Override
     protected BpmnModel convertToFlowModel(Element top) {
         if (top instanceof Definitions) {
-            Definitions definitions = (Definitions)top;
+            Definitions definitions = (Definitions) top;
             List<Process> processes = definitions.getProcesses();
             if (CollectionUtils.isEmpty(processes)) {
                 throw new CompileFlowException("No process founded");
@@ -109,20 +109,20 @@ private void buildFlowTransition(BpmnModel bpmnModel) {
         Process process = bpmnModel.getProcess();
         buildFlowTransition(process);
         process.getFlowElements().stream().filter(flowElement -> flowElement instanceof SubProcess)
-            .map(e -> (SubProcess)e)
+            .map(e -> (SubProcess) e)
             .forEach(this::buildFlowTransition);
     }
 
     private void buildFlowTransition(ElementContainer<FlowElement, FlowNode> elementContainer) {
         elementContainer.getAllElements().stream().filter(flowElement -> flowElement instanceof SequenceFlow)
-            .map(e -> (SequenceFlow)e).forEach(sequenceFlow -> {
-            FlowNode source = elementContainer.getNode(sequenceFlow.getSourceRef());
-            FlowNode target = elementContainer.getNode(sequenceFlow.getTargetRef());
-            source.addOutgoingFlow(sequenceFlow);
-            source.addOutgoingNode(target);
-            target.addIncomingFlow(sequenceFlow);
-            target.addIncomingNode(source);
-        });
+            .map(e -> (SequenceFlow) e).forEach(sequenceFlow -> {
+                FlowNode source = elementContainer.getNode(sequenceFlow.getSourceRef());
+                FlowNode target = elementContainer.getNode(sequenceFlow.getTargetRef());
+                source.addOutgoingFlow(sequenceFlow);
+                source.addOutgoingNode(target);
+                target.addIncomingFlow(sequenceFlow);
+                target.addIncomingNode(source);
+            });
     }
 
     @Override

src/main/java/com/alibaba/compileflow/engine/process/preruntime/converter/impl/parser/support/bpmn/CallActivityParser.java

@@ -19,9 +19,9 @@
 import com.alibaba.compileflow.engine.definition.bpmn.BpmnModelConstants;
 import com.alibaba.compileflow.engine.definition.bpmn.CallActivity;
 import com.alibaba.compileflow.engine.definition.common.Element;
-import com.alibaba.compileflow.engine.process.preruntime.converter.impl.parser.support.AbstractBpmnElementParser;
 import com.alibaba.compileflow.engine.process.preruntime.converter.impl.parser.model.ParseContext;
 import com.alibaba.compileflow.engine.process.preruntime.converter.impl.parser.model.XMLSource;
+import com.alibaba.compileflow.engine.process.preruntime.converter.impl.parser.support.AbstractBpmnElementParser;
 
 /**
  * @author wuxiang

src/main/java/com/alibaba/compileflow/engine/process/preruntime/converter/impl/parser/support/bpmn/ConditionExpressionParser.java

@@ -19,9 +19,9 @@
 import com.alibaba.compileflow.engine.definition.bpmn.BpmnModelConstants;
 import com.alibaba.compileflow.engine.definition.bpmn.Expression;
 import com.alibaba.compileflow.engine.definition.common.Element;
-import com.alibaba.compileflow.engine.process.preruntime.converter.impl.parser.support.AbstractBpmnElementParser;
 import com.alibaba.compileflow.engine.process.preruntime.converter.impl.parser.model.ParseContext;
 import com.alibaba.compileflow.engine.process.preruntime.converter.impl.parser.model.XMLSource;
+import com.alibaba.compileflow.engine.process.preruntime.converter.impl.parser.support.AbstractBpmnElementParser;
 
 /**
  * @author wuxiang

src/main/java/com/alibaba/compileflow/engine/process/preruntime/converter/impl/parser/support/bpmn/DefinitionsParser.java

@@ -20,9 +20,9 @@
 import com.alibaba.compileflow.engine.definition.bpmn.Definitions;
 import com.alibaba.compileflow.engine.definition.bpmn.Process;
 import com.alibaba.compileflow.engine.definition.common.Element;
-import com.alibaba.compileflow.engine.process.preruntime.converter.impl.parser.support.AbstractBpmnElementParser;
 import com.alibaba.compileflow.engine.process.preruntime.converter.impl.parser.model.ParseContext;
 import com.alibaba.compileflow.engine.process.preruntime.converter.impl.parser.model.XMLSource;
+import com.alibaba.compileflow.engine.process.preruntime.converter.impl.parser.support.AbstractBpmnElementParser;
 
 /**
  * @author wuxiang
@@ -48,7 +48,7 @@ protected Definitions doParse(XMLSource xmlSource, ParseContext parseContext) th
     @Override
     protected void attachChildElement(Element childElement, Definitions element, ParseContext parseContext) {
         if (childElement instanceof Process) {
-            element.getProcesses().add((Process)childElement);
+            element.getProcesses().add((Process) childElement);
         }
     }
 

src/main/java/com/alibaba/compileflow/engine/process/preruntime/converter/impl/parser/support/bpmn/EndEventParser.java

@@ -19,9 +19,9 @@
 import com.alibaba.compileflow.engine.definition.bpmn.BpmnModelConstants;
 import com.alibaba.compileflow.engine.definition.bpmn.EndEvent;
 import com.alibaba.compileflow.engine.definition.common.Element;
-import com.alibaba.compileflow.engine.process.preruntime.converter.impl.parser.support.AbstractBpmnElementParser;
 import com.alibaba.compileflow.engine.process.preruntime.converter.impl.parser.model.ParseContext;
 import com.alibaba.compileflow.engine.process.preruntime.converter.impl.parser.model.XMLSource;
+import com.alibaba.compileflow.engine.process.preruntime.converter.impl.parser.support.AbstractBpmnElementParser;
 
 /**
  * @author wuxiang

src/main/java/com/alibaba/compileflow/engine/process/preruntime/converter/impl/parser/support/bpmn/ExclusiveGatewayParser.java

@@ -19,9 +19,9 @@
 import com.alibaba.compileflow.engine.definition.bpmn.BpmnModelConstants;
 import com.alibaba.compileflow.engine.definition.bpmn.ExclusiveGateway;
 import com.alibaba.compileflow.engine.definition.common.Element;
-import com.alibaba.compileflow.engine.process.preruntime.converter.impl.parser.support.AbstractBpmnElementParser;
 import com.alibaba.compileflow.engine.process.preruntime.converter.impl.parser.model.ParseContext;
 import com.alibaba.compileflow.engine.process.preruntime.converter.impl.parser.model.XMLSource;
+import com.alibaba.compileflow.engine.process.preruntime.converter.impl.parser.support.AbstractBpmnElementParser;
 
 /**
  * @author wuxiang

src/main/java/com/alibaba/compileflow/engine/process/preruntime/converter/impl/parser/support/bpmn/ExtensionElementsParser.java

@@ -22,9 +22,9 @@
 import com.alibaba.compileflow.engine.definition.common.extension.AbstractExtensionElement;
 import com.alibaba.compileflow.engine.definition.common.extension.ExtensionAttribute;
 import com.alibaba.compileflow.engine.definition.common.extension.ExtensionElement;
-import com.alibaba.compileflow.engine.process.preruntime.converter.impl.parser.support.AbstractBpmnElementParser;
 import com.alibaba.compileflow.engine.process.preruntime.converter.impl.parser.model.ParseContext;
 import com.alibaba.compileflow.engine.process.preruntime.converter.impl.parser.model.XMLSource;
+import com.alibaba.compileflow.engine.process.preruntime.converter.impl.parser.support.AbstractBpmnElementParser;
 
 /**
  * @author wuxiang
@@ -38,7 +38,7 @@ protected ExtensionElements doParse(XMLSource xmlSource, ParseContext parseConte
         while (!xmlSource.endWith(BpmnModelConstants.BPMN_ELEMENT_EXTENSION_ELEMENTS)) {
             if (xmlSource.hasNext()) {
                 ExtensionElement extensionElement = parseExtensionElement(xmlSource);
-                AbstractExtensionElement parentElement = (AbstractExtensionElement)parseContext.getParent();
+                AbstractExtensionElement parentElement = (AbstractExtensionElement) parseContext.getParent();
                 parentElement.addExtensionElement(extensionElement);
                 extensionElements.addExtensionElements(extensionElement);
             }

src/main/java/com/alibaba/compileflow/engine/process/preruntime/converter/impl/parser/support/bpmn/InclusiveGatewayParser.java

@@ -19,9 +19,9 @@
 import com.alibaba.compileflow.engine.definition.bpmn.BpmnModelConstants;
 import com.alibaba.compileflow.engine.definition.bpmn.InclusiveGateway;
 import com.alibaba.compileflow.engine.definition.common.Element;
-import com.alibaba.compileflow.engine.process.preruntime.converter.impl.parser.support.AbstractBpmnElementParser;
 import com.alibaba.compileflow.engine.process.preruntime.converter.impl.parser.model.ParseContext;
 import com.alibaba.compileflow.engine.process.preruntime.converter.impl.parser.model.XMLSource;
+import com.alibaba.compileflow.engine.process.preruntime.converter.impl.parser.support.AbstractBpmnElementParser;
 
 /**
  * @author wuxiang